Abstract
IT is generally assumed that bacteria ingested in food or water do not enter the trachea but that all of them pass down the œsophagus. One interesting observation in this respect was made by White and Minett1, who noted that when calves were fed milk containing Mycobacterium tuberculosis primary lesions of tuberculosis were sometimes found in the lungs, indicating that some of the bacteria administered may have been aspirated into the lungs. More direct evidence that this may occur was obtained as a result of some experiments that were designed to trace the route by which Salmonella gallinarum enters the body following its administration to chickens by mouth.
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References
White, E. G., and Minett, F. C., Brit. J. Tubercul., 35, 69 (1941).
Hynes, M., J. Path. Bact., 54, 193 (1942).
Hobbs, B. C., and Allison, V. D., Mon. Bull. Min. Health, Lond., 4, 63 (1945).
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SMITH, H. Isolation from the Lower Respiratory Tract of Chickens of Bacteria administered by Mouth. Nature 174, 45 (1954). https://doi.org/10.1038/174045a0
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DOI: https://doi.org/10.1038/174045a0
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